In of itself (suffering) won’t make you mature, but it will be the venue of your testing (1 Peter 4). It will give you the opportunity to endure and in so doing develop character (Romans 5). This is what we call maturity, a growing Christlikeness (2 Corinthians 3) and a growing wisdom (Luke 2) that happens through being broken like bread.
TM Suffield, Maturity requires suffering